Those who spend more pre-bedtime hours using the Internet or watching television are more likely to report insufficient sleep, even though they sleep almost as long as people spending fewer pre-bedtime hours in front of a computer or television screen, survey findings show.
“While many people use electronic media, say, the Internet, it should be noted that the longer media use before sleep can trigger (self-perceived) insufficient sleep,” lead researcher Dr Nakamori Suganuma, of Osaka University, Japan, told the reporter.
He and colleagues obtained data on self-perceived sleep problems and the use of electronic media prior to bedtime from 5,875 altogether Japanese respondents in two separate Internet-based surveys. Their findings are published in Sleep and Biological Rhythms.
Nearly half of the respondents associated their problem with electronic media use before bedtime. Longer electronic media users were also more likely to report insufficient sleep.
“Overall, 29% of light users (less than 1.5 hours) listed electronic media use as a possible cause of their insufficient sleep. By comparison, 40% of medium users (1.5 to 3 hours) and 54% of heavy users (more than 3 hours) said the same.
However, longer Internet and television use before bedtime did not correlate with less actual sleep.
While heavy users averaged about 3 more hours in front of computer or television screens than light users, the heavy users averaged only about 12 minutes less pre-workday sleep time than light users.
Notably, Suganuma said, "Internet use affected self-perceived insufficient sleep more than TV watching not only in younger Internet users but also in middle-aged or aged Internet users."
Up to 38% of the respondents listed accessing the Internet far into the night as a possible cause for their sleep disturbance, while about 25% said watching television far into the night caused it.
The findings suggest that while heavy computer and television use before bedtime has a small effect on sleep duration, it may have a more significant effect on "sleep demand and sleep quality," Suganuma notes.
小题1: Heavy computer and television user before bed time are more likely to be______ than light ones.
A．energetic
B．happy
C．sleepy
D．clever小题2:Which of the following statements is true according to the passage?
A．Heavy computer and television user before bed time have less sleeping time than light ones.
B．Heavy computer and television user before bed time have worse sleep than light ones.
C．Those suffering insufficient sleep spend less time in using internet than in watching TV.
D．Spend less time in watching TV or surfing the internet, and you will have a better sleep.小题3:The passage seems to suggest that people ______.
A．be far away from media.
B．watch TV rather than use internet
C．cut down late-night Internet and TV
D．Stop late-night internet and TV小题4:Which of the following phrases is similar in meaning to the underlined phrase in the sixth paragraph?
A．have any connection with
B．make a friend with
C．share the opinion with
D．in accordance with
